diff --git a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/ParallelFlowDatabaseOperation.java b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/ParallelFlowDatabaseOperation.java
index e9cafee..b5fd95d 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/flowmanager/ParallelFlowDatabaseOperation.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/flowmanager/ParallelFlowDatabaseOperation.java
@@ -23,6 +23,7 @@
 import net.onrc.onos.ofcontroller.util.FlowEntrySwitchState;
 import net.onrc.onos.ofcontroller.util.FlowId;
 import net.onrc.onos.ofcontroller.util.FlowPath;
+import net.onrc.onos.ofcontroller.util.PerformanceMonitor;
 import net.onrc.onos.ofcontroller.util.serializers.KryoFactory;
 
 import com.esotericsoftware.kryo.Kryo;